CVE-2025-66510

| EUVD-2025-201451 MEDIUM
2025-12-05 [email protected]
4.5
CVSS 3.1
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CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:N/A:N
Attack Vector
Network
Attack Complexity
Low
Privileges Required
High
User Interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None

Lifecycle Timeline

4
Analysis Generated
Mar 15, 2026 - 17:08 vuln.today
EUVD ID Assigned
Mar 15, 2026 - 17:08 euvd
EUVD-2025-201451
Patch Released
Mar 15, 2026 - 17:08 nvd
Patch available
CVE Published
Dec 05, 2025 - 17:16 nvd
MEDIUM 4.5

Tags

Information Disclosure Debian Nextcloud Server Nextcloud

Description

Nextcloud Server is a self hosted personal cloud system. In Nextcloud Server prior to 31.0.10 and 32.0.1 and Nextcloud Enterprise Server prior to 28.0.14.11, 29.0.16.8, 30.0.17.3, and 31.0.10, contacts search allowed to retrieve personal data of other users (emails, names, identifiers) without proper access control. This allows an authenticated user to retrieve information about accounts that are not related or added as contacts.

Analysis

A security vulnerability in Nextcloud Server (CVSS 4.5) that allows an authenticated user. Remediation should follow standard vulnerability management procedures. Vendor patch is available.

Technical Context

Vulnerability type not specified by vendor. Affects Nextcloud Server.

Affected Products

['Nextcloud Server']

Remediation

Apply the vendor-supplied patch immediately.

Priority Score

23
Low Medium High Critical
KEV: 0
EPSS: +0.0
CVSS: +22
POC: 0

Vendor Status

Debian

Bug #941708
nextcloud-server
Release Status Fixed Version Urgency
open - -

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CVE-2025-66510 vulnerability details – vuln.today
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